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Potato Virus Y NTN : A Coat and P1 Protein Sequences Analysis of a Brazilian Isolate |
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| Authors: | Haiko Enok Sawazaki José Alberto Caram de Souza-Dias James H Lorenzen Colin Jeffries Diego Grando Módolo Dagmar Stach Machado |
| Institution: | 1. Centro de Pesquisa e Desenvolvimento de Recursos Genéticos Vegetais, APTA-Instituto Agron?mico (IAC), C. Postal 28, CEP 13001-970, Campinas, SP, Brazil 2. Centro de Pesquisa e Desenvolvimento de Fitossanidade, APTA-Instituto Agron?mico (IAC), C. Postal 28, CEP 13001-970, Campinas, SP, Brazil 3. Department of Plant Soil and Entomological Sciences, University of Idaho, Moscow, ID, 83844, USA 4. SASA, Roddinglaw Road, Edinburgh, EH12 9FJ, Scotland, UK 5. Departamento de Microbiologia e Imunologia, Instituto de Biologia, UNICAMP, C. Postal 6109, CEP 13083-862, Campinas, SP, Brazil |
| Abstract: | Potato tubers (Solanum tuberosum L. cv. Monalisa) showing superficial necrotic rings typical of Potato virus Y NTN (PVYNTN) infection were collected from commercial potato fields in the State of São Paulo (Brazil). An isolate named IAC-PVYNTN was characterized by sequencing 822 and 836 nucleotides from the coat protein and P1 protein coding genes, respectively. The IAC-PVYNTN was observed as a European/North American recombinant isolate closely related to three Eu-PVYNTN isolates that share an alternative recombination site in the coat protein cistron near position 144. Therefore, the IAC-PVYNTN isolate may represent a novel recombinant variant between PVYN N-605 Swiss (European) and PVY O-139 Canadian (North American). Cluster analysis of the P1 sequences found IAC-PVYNTN in the sub-cluster of Eu-PVYN/NTN/N:O. This study supports previous evidence of a common origin for PVYN/NTN in Europe and Brazil. |
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